Quick Load Help- 30/338 Winchester

[chomondely3]

Winchester .338 case necked down to .30
Case Volume= 85 gr H2O
Winchester LR Magnum Primer
COAL=3.140
Case trim length= 2.50
Rifle= Remington 40X solid action, barrel 29 inches, straight taper, .900 at the muzzle, stainless, maker unknown, 12 twist. This was an any rifle, any sight rifle back in the early 70’s. Yes, it is a bit muzzle heavy.

Bullets:
190 Sierra Match King- 1.364 long, 65 gr I4350
200 Sierra International – 1.326 long 64 gr I4350
These loads are less than the maximum shown in the Sierra Infinity Suite. Dad got these loads from Ft. Benning back in the old days. Of course, I will start at low and work my way up looking for signs of pressure.

Could you please run Quick Load calculation for these bullets and powder?

Do you have load suggestions for other powders such as R26 or I7828?

Do you have load suggestions for other powders such as R26 or I7828 or any more modern powders?

Thanks for your help. I am having a good time working with my dad’s old target rifles.

 

[2506]

I had a buddy that had basically the same rifle you described except it had a 10" twist barrel. He picked it up from an estate sale for little of nothing because it was a wild cat. We shot it some and it was very accurate and he killed a few deer with it while we were doing crop damage control. He ended up selling it to a fellow who lived in Alaska that wanted it for bear hunting.

 

[chomondely3]

I can't wait to get to the range to see if it will still shoot.

 

[machineman98]

I shoot a 30-338 WM. Remington 700 28" 10 twist heavy varmint barrel.
72.0 gr. V160 168 Berger VLD 3250 FPS .5 MOA
73.0 group. IMR 7977 185gr. Berger Jugs. 3000 FPS also .5 MOA

 

[Zero333]

3.140" is a fairly short COAL.

Here is what QL spits out... and I assume I4350 means IMR-4350 ???
===========================================
First column = step increment in charge weight.
Second = Case fill %
Third = Charge Weight in Grains gr.
Fourth = Velocity FPS
Fifth = Muzzle Energy ft-lbs.
Sixth = Chamber pressure PSI.
Seventh = Muzzle pressure psi.
Eighth = Powder burned %
Ninth = Barrel time milliseconds ms.

Cartridge : .30/338 Win. Mag.
Bullet : .308, 190, Sierra HP MatchK 2210
Useable Case Capaci: 72.538 grain H2O = 4.710 cm³
Cartridge O.A.L. L6: 3.140 inch = 79.76 mm
Barrel Length : 29.0 inch = 736.6 mm
Powder : IMR 4350

Predicted data by increasing and decreasing the given charge,
incremented in steps of 2.0% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !

Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time
% % Grains fps ft.lbs psi psi % ms

-20.0 78 52.00 2461 2555 34415 7049 95.5 1.719
-18.0 80 53.30 2515 2669 36597 7227 96.3 1.678
-16.0 82 54.60 2570 2786 38910 7397 97.0 1.632
-14.0 84 55.90 2624 2904 41359 7558 97.7 1.586
-12.0 86 57.20 2677 3024 43954 7709 98.3 1.543
-10.0 88 58.50 2730 3145 46704 7850 98.8 1.501
-08.0 90 59.80 2783 3268 49617 7980 99.2 1.460
-06.0 92 61.10 2836 3393 52706 8098 99.5 1.421 ! Near Maximum !
-04.0 94 62.40 2888 3518 55982 8205 99.7 1.384 ! Near Maximum !
-02.0 96 63.70 2939 3645 59458 8299 99.9 1.348 ! Near Maximum !
+00.0 98 65.00 2990 3773 63147 8381 100.0 1.313 !DANGEROUS LOAD-DO NOT USE!
--------------------------------------------------

190 SMK
65 gr IMR-4350
98% case fill
2,990 fps
3,773 ft-lbs.
63,147 psi
99.9% powder burned.

 

[Zero333]

200 SMK ( 1.326" long )
=============================================

Cartridge : .30/338 Win. Mag.
Bullet : .308, 200, Sierra HP MatchK 2230
Useable Case Capaci: 73.185 grain H2O = 4.752 cm³
Cartridge O.A.L. L6: 3.140 inch = 79.76 mm
Barrel Length : 29.0 inch = 736.6 mm
Powder : IMR 4350

Predicted data by increasing and decreasing the given charge,
incremented in steps of 2.0% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !

Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time
% % Grains fps ft.lbs psi psi % ms

-20.0 76 51.20 2394 2545 33941 7038 96.0 1.769
-18.0 78 52.48 2446 2657 36052 7213 96.8 1.727
-16.0 80 53.76 2498 2772 38284 7380 97.5 1.681
-14.0 82 55.04 2550 2888 40644 7538 98.1 1.636
-12.0 84 56.32 2601 3005 43139 7685 98.6 1.591
-10.0 86 57.60 2652 3124 45777 7823 99.0 1.549
-08.0 88 58.88 2703 3244 48567 7950 99.4 1.508
-06.0 90 60.16 2753 3366 51518 8066 99.7 1.468
-04.0 92 61.44 2803 3488 54639 8170 99.9 1.430 ! Near Maximum !
-02.0 93 62.72 2852 3612 57944 8263 100.0 1.394 ! Near Maximum !
+00.0 95 64.00 2901 3736 61442 8343 100.0 1.359 !DANGEROUS LOAD-DO NOT USE!
====================================

200 smk
64 gr IMR-4350
95% case fill
2,901 fps
3,736 ft-lbs
61,441 psi
100% powder burned.

 

[Zero333]

I suggest H-4831 / H-4831sc or RL-25. for best accuracy.

QL predictions (MAX/Near MAX loads)....

30-338 WinMag
-------------------------------------------
190 smk
H-4831sc
3.140" coal
69 gr
3,001 fps
98% case fill
60,588 psi
29"bbl
--------------------------------------------

200 SMK ( 1.326" )
H-4831sc
3.140" coal
68.5 gr
2,934 fps
100% case fill
60,418 psi
29"bbl
------------------------------------------

190 SMK
RL-25
3.140" coal
73 gr
3,089 fps
109% case fill
59,305 psi
----------------------------------------

200 SMK
RL-25
3.140" coal
73 gr
3,039 fps
108% case fill
60,913 psi
-------------------------------------------------

Note that a longer COAL (with out putting the projectile into the lands) will produce less pressure and less velocity. Therefore COAL has a big role determining MAX charge weight.

 

[chomondely3]

Thanks for the information. I will start at the low end and work my way up. I'll let you know the results.

 

[chomondely3]

I did mean IMR 4350 and I found a typo in my original post.
The correct COAL is 3.410. That should lower the pressure bit.

 

[Zero333]

Ok. 3.410" sounds better

According to QL the difference in pressure (and velocity) between those 2 different COAL's is a fair bit.

Corrected data.......
-------------------------------------------
190 smk, IMR-4350, 3.410"coal

65 gr = 55,000 psi = 2,907 fps
67 gr = 60,000 psi = 2,982 fps
---------------------------------------------
200 smk (1.326")

64 gr = 54,000 psi = 2,822 fps

66.5 gr = 60,000 psi = 2,913
----------------------------------------------

Good luck and most importantly stay safe and HAVE FUN !

 

[cem]

I suggest H-4831 / H-4831sc or RL-25. for best accuracy.

QL predi
-------------------------------------------------

Note that a longer COAL (with out putting the projectile into the lands) will produce less pressure and less velocity. Therefore COAL has a big role determining MAX charge weight.

In many cases a shorter COAL will produce less pressure because the effect of a running start into the lands dominates the effect of the reduced case capacity. It is certainly true that the longer COAL increases capacity and so reduces pressure from that cause but does not reduce pressure which peaks as the bullet is engraved with less of a running start. See Brownell's pressure factors, Weatherby free bore or 9x23 long throating for practical examples/effects.

 

[chomondely3]

Thanks for the new calculations. Looks like I am in a safe range given the QL and Sierra Infinty information.

 

[esromvre1]

Wondering what a 155 palma would look like in this caliber?